What is a Trident hip replacement?
The Trident® Ceramic System uses a process called arc deposition to apply a titanium metal coating to the Trident® acetabular shell’s outer surface. This coating gives a slightly rough and textured surface to the acetabular shell, allowing the implant to initially fixate onto the bone.
What is a acetabular liner?
The Acetabular Shell provides the base for bony ingrowth, while the liner clips into the shell and articulates directly with the Femoral Head. The Liner Size refers to its inner diameter = the Femoral Head Size. The poly must be at the very minimum 6 mm in thickness to prevent fracture.
What is an acetabular shell?
A metal shell for bony ingrowth + a polyethylene liner (sometimes metal or ceramic) that snaps into the shell and articulates with the femoral head. The modern acetabular implant is a “press-fit” design (it is not cemented).
What is Stryker Accolade 2 made of?
The ACCOLADE II Femoral Hip System is a femoral stem that is intended for cementless, press-fit application. The proximal region of the stem is coated with PureFix HA over a commercially pure titanium plasma spray substrate.
What is an Exeter Trident hip replacement?
When a combination of an uncemented socket and a cemented stem is used this is a referred to as a hybrid hip replacement. The surgeons in the Reading Hip & Knee Unit often use a hybrid hip replacement with a cemented Exeter Stem (Stryker) in the femur and an uncemented Trident socket (Stryker) in the acetabulum.
What is Exeter stem made of?
The Exeter™ stem is a cemented, double tapered, highly polished stainless steel femoral stem and has been a popular hip replacement in the UK over the past ten years.
What is a constrained hip liner?
Constrained acetabular liners are a powerful revision option for achieving joint stability particularly when the cause of dislocation cannot be determined. They are designed to hold the femoral head captive via a secure locking mechanism.
Is acetabular fracture a hip fracture?
An acetabular fracture is a break in the socket portion of the “ball-and-socket” hip joint. These hip socket fractures are not common — they occur much less frequently than fractures of the upper femur or femoral head (the “ball” portion of the joint).
What is femoral stem?
The femoral stem component replaces a large portion of bone in the femur, and this is therefore the load-bearing part of the implant. To bear this load, it must have a Young’s Modulus comparable to that of cortical bone.
What is femoral component?
The femoral component reproduces the anatomy of the distal femur; it has an asymmetrical anterior flange similar to the patellar grove, which is useful to avoid lateral dislocation of the patella.
What is the best material to use for hip replacement?
Ceramic heads are very hard and very smooth. As a result, they cause less wearing of the polyethylene. People who are sensitive to the nickel used in metal implants might be a good fit for the ceramic type. We use ceramic on polyethylene in the majority of total hip replacements.